Your message dated Mon, 28 Jul 2025 23:00:33 +0200 with message-id <[email protected]> and subject line Re: Bug#1079800: release-notes - Document that default ppc64el kernel switched to 4k pages has caused the Debian Bug report #1079800, regarding release-notes - Document that default ppc64el kernel switched to 4k pages to be marked as done.
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--- Begin Message ---Package: release-notes The kernel team decided to switch the default kernel for ppc64el (and with this also ppc64) to 4k page size. This is known to break systems in some circumstances. We need to document this in the release notes as well as in the package. For reference, the NEWS entry in the package: * From Linux 6.10, the default kernel on ppc64 and ppc64el architectures uses 4k page size. After rebooting, you need to re-create all swap files or partitions. They depend on the page size and will be not longer usable. See mkswap(8) on how to do that. Some file systems might be incompatible with the smaller page size. At least btrfs created with default settings is known to be affected and they will not work with this kernel any more. A btrfs file system can be checked with file(1) (use file -s). It will show: BTRFS Filesystem sectorsize 65536 If this number is larger then 4096, the file system can not be mounted with the default kernel anymore. If you are affected and require the 64k page size of older kernels, you can install linux-image-powerpc64-64k or linux-image-powerpc64el-64k packages. Bastian -- A Vulcan can no sooner be disloyal than he can exist without breathing. -- Kirk, "The Menagerie", stardate 3012.4
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--- Begin Message ---On Sat, Jul 19, 2025 at 01:36:19AM +0200, Chris Hofstaedtler wrote: > Control: forwarded -1 > https://salsa.debian.org/ddp-team/release-notes/-/merge_requests/280 > > On Tue, Aug 27, 2024 at 05:12:34PM +0200, Bastian Blank wrote: > > The kernel team decided to switch the default kernel for ppc64el (and > > with this also ppc64) to 4k page size. This is known to break systems > > in some circumstances. We need to document this in the release notes as > > well as in the package. > > It's unclear to me which info is useful directly in the > release-notes, and what can just be in the kernel NEWS file. > > I've opened an MR at > https://salsa.debian.org/ddp-team/release-notes/-/merge_requests/280 > > Improvements & review welcome. Ben submitted https://salsa.debian.org/ddp-team/release-notes/-/merge_requests/292 with improved text/contents and this was merged. Closing. Chris
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